Questions and Answers
What is a nonequivalent groups design characterized by?
The lack of random assignment of subjects
What is always threatened by individual differences?
A nonequivalent groups design
A _____________ research design is a research study that simply compares preexisting groups.
differential
What is a post test-only nonequivalent control group design also called?
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What type of design is illustrated by the preceding diagram?
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Study Notes
Nonequivalent Groups Design
- Characterized by the absence of random assignment of subjects, which can lead to bias.
- This design often involves groups that were formed based on preexisting characteristics rather than random selection.
Threats to Validity
- Individual differences pose a significant threat to the validity of nonequivalent group designs, as variations among participants can influence outcomes.
Differential Research Design
- Refers to a type of research study that compares preexisting groups, typically without the manipulation of variables.
Post Test-Only Nonequivalent Control Group Design
- Also known as the static group comparison, this design involves measuring outcomes only after the treatment has been administered, without any pre-intervention assessments.
Pretest-Posttest Nonequivalent Control Group Design
- This design features both pre- and post-intervention measurements for the control and experimental groups, allowing for a comparison of changes over time.
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Description
This quiz focuses on the nonequivalent group designs in psychology, specifically between-subjects nonexperimental and quasi-experimental designs. Test your knowledge on key concepts such as the lack of random assignment and individual differences in these research designs.
